The sky on September 13, 1972 — as it really was
That day the Sun stood in Leo, while the horoscope says "Virgo". The gap is 23.5° of precession.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 170.8° · sign Virgo · constellation Leo
- ☽︎ Moon — 235.7° · sign Scorpio · constellation Libra
- ☿︎ Mercury — 165.1° · sign Virgo · constellation Leo
- ♀︎ Venus — 125.8° · sign Leo · constellation Cancer
- ♂︎ Mars — 168.8° · sign Virgo · constellation Leo
- ♃︎ Jupiter — 269.1° · sign Sagittarius · constellation Sagittarius
- ♄︎ Saturn — 80.3° · sign Gemini · constellation Taurus
- ☽︎ Moon 29% illuminated
astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.
The day’s dossier, from real data
Checkable facts with a tag and a source; the classical reading is in the chart.
- The Moon that day [EXACT]
waxing crescent, 29% lit; the Moon was 404,881 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
54.1 orbits of the Sun — 50,802 million km, that is 66,079 return trips to the Moon; 19,744 rotations of Earth; with the Sun — 392.4 billion km around the Galactic centre, 15.1 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 399 million km away; today it is 245 million km (closer by 1.6×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 20, on the decline (70% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on March 31, 2027; Jupiter — in 2031; a full moon exactly on this date — September 13, 2057
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,700″ since that day; the real constellations now sit 23.5° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.